Multiple-needle weft detector



Nov. 29, 1927. A O. V. PAYNE MULTIPLE NEEDLE WEFT DETECTOR Filed June 1926 I9 Z5 5E 54 35, Y 33 E! n l l l I l l l@ 4 5 am Vgl/7a ffi @Lm Patented Nov. 29, 1927.

UNITED STATES PATENT OFFICE.

oscan v. PAYNE;- oE woE'oEsTEEy MASSACHUSETTS', essienon TocEoMPToN a Know/"LES Loom WORKS, `or WORCESTER, MASSACHUSETTS, A CoEPo'EaTron' 0E .MASSACHUSETTS Application filed June 4', 1926.

the type shown in patent to' Ryonv No.

l,221,?68 ind it is the principal object of the l 5 inventionv to simplify the construction of a detector of this type to the end that close fitting and` excessive machining operations may he avoided. l

The yarn engaging elements of detectors of this type usually have two parallel arms which pass through either milled slots or drilled holes lout it has been .found that considerable iitting is required to have both arms move freely. The upper portion of the yarn engaging element has usually heen the controller for the loom actuator and it is a further object of my invention to provide a yarnA engaging element the hearing portions of which are in alignment tothe end that a single machining opera-tion will provide the Vrequisite bearings for the elements.

It is a further object of my invention to provide each detector element with an up-V standing controller tocooperate with supporting guides formed oneach side of the complement of detecting, elements, the guides serving to hold the elements and the con-` troller portions thereof in proper position..

lt is a still further object of my .invention to provide a support for the detecting. elements having a'looss under the controllers on which the detecting elements rest to take the downward pressure of the actuator lever and thus relieve the detectingy elements of strain. n y l* lv/Vith these and other objects inV View which will appear as. the description pro# ceeds7 my invention resides'in the combina- Vtionand arrangement of aarts hereinafterclescrihed and set forth in the claims.

In the accompanying drawings viherein' l;

loolgingin the direction of arrow 2,.Fig. 1,V

Fig.. 3 isa vertical section on linefS-S of kFig. 2; and

- 4', 5, and 6 are enlarged detail verti-v calseotions oni lines'e-fl', LTS, and @-563 r6- spec'tivelyyof'lig. l,

MULTIPLE-NEEDLE WEET DETECTOR.

Serial No. 1131794.

Referring iriarticul-arly to Figs. 1 and 2 it will lie seen that l have provided astand 1() to which is lioltcd a support 11 having a rib 12 formed onthe upstanding portion thereof, A hed 13 has a dependingvfoot 14 with a notch to receive the rib 12, said foot and support having aligning openings through which extends a springy 15 th 'e forward end of which is secured to a' finger 16 depending from the hed 13 vand the rear end of which extends through the openings and is lheld in position by apin having contact with the rear face of the support 11. Said spring provides for yielding forward movementof the bed such as might result should a hohhin he caught between the same and the advancing lay. rlhe forward. end of the hed is thiclrenedas at 18 and has cut therethrough' a Series of 'parallel vertical slots 19 which are in alignment with Vanother set of parallel vertical slots 20 cut in a thickened portion 21 located at the rear of the hed 13. Y

Slidfaloly mounted on the'bed is aplurality of needle detectors 22 which project rearwardly to enter a slot 23 formed in the shut-l tleV S to cooperate with the loohhin B. The latter is provided' with a pluralityl of holes 2li which may he arrangedy as shown either in latent No'. 1,220,685' or No. 1,335,706, the holes being arranged in'l parallel planes and staggered angulai-'l-y so that when thefyarn has been woven olf the'hfohhi-n' a portion of at least one of the holes will lieopposite rone or another of the needle' detectors 22'. :Thepforward end of each 'detector-.is up'- turned as at`25 to cooperate with a stud 26. formed in the transferring inemloerT. et the time of transfer the stud 26 will move to the left from the full to the dottedalinel hrazed, welded. or otl'ierwise secured thereto a controller member 2T having a lower herr. Zontal arm Q8 formed with a concave longitudinal groove which vreceives a portion` of rthe upper surface ofthe correspondinggfr wire 22 as shown in 6.,y Eachl of said'y con-- trollers has a forwardly extending guard 29 and an upstanding trip 30 to cooperate with' the actuator lever 31 struction. Y. J .l n

Said detecting wires 22 or elementsjare' of the usual. con- L.

held in proper position by a cap 32 held to the bed byV means of screws 33 and have a forwardly extending` horizontal portion to extend over a portion of the slots 19 to restrict upward movement of the forward part of the needle detectors 22. r1`he rear portion of the cap extends over the slots 20 and cooperates therewith to hold the yarn engaging portions of the detector wires in proper position as set forth in Fig. 5.

The cap is provided with a pair `of separated walls 34 which stand up from the central side portions of the cap and are so located aste position the guards 29. rlhe latter substantially :fill the space between he walls and thus insure proper positioning` of the detector wires 22. The central portion of the cap is cut away as at 35 to permit free movement of the lower horizontal arms 28 of the controller members Q7. The rear edge 36 of, the opening 35 limits rearward movement of ther detectors under action of coil springs 37, one of which surrounds each detector and lies between the thickened portion 18 and the controller member 27.

Under normal conditions when suliicient yarn for continued weaving is present the bobbin B will move forward with the lay and all of the detector wires 22 will slide forwardly in bed 13 against the action of the springs 37 to move the controllers 27 from under the actuator lever 31. When the lay is on front center the actuator is given a downward movement and when it ts uninterrupted in this kmovement no change takes place in the loom. TvVhen the weft has been depleted, however, one or another of the detector needles Q2 will enter a hole 9A, being held in this position by its spring, and although the remaining detectors will be moved forwardly by the'bobbin yet the one entering the hole in the bobbin will remain under the actuator lever 31 and downward movement of the latter will therefore be prevented, a condition which as explained in Patent No. 1,030,748 is accompanied by an indication of weft exhaustion to the maga- Zine. Downward pressure of the actuator lever is transferred to the bess 38 formed on the bed 13 and lying immediately under the vertical portion of the controller member 27. In this'way kthe detector needles are relieved of any strain to which they might otherwise be subjected by the actuator.

From the foregoing' it will be .seen that l have provided a, simple form of detector for multiple needle weft detectors having the bearing portions thereof in alignment and requiring'but one machining.operation to provide the guides for the needles. Proper positioning ofthe latter is insured by the guards 29 which substantially fill the space between the walls 34 and the detecting elements are relieved of any lateral strain kby the bos/S38 Having thus described my invention it will be apparent that changes and modifications may be made therein by those skilled in the art without departingfrom the spirit and scope of the invention, and I do not walls, the controller corresponding to the i indicating detector cooperating` with the actuator to effect a change in the operation of the loom.

In a we ft detector for looms to cooperate with a bobbin having a plurality of holes therein to be uncovered at substantial eX- haustion of weft, aplurality of individually 'movable detectors, a support therefor having` aligning guideways, each detector having` a substantially straight portion lying* in. the corresponding guideways, a controller secured to and upstanding from each detcctor, an actuatorfor the controllers, and relatively fixed spaced means to support the controllers againstV lateral movement, portions of the controllers substantially filling th-e space between said means so that said controllers support each other.

3. In a weft detector forv looms to cooperate with a bobbin having a' plurality of holes therein to-be uncovered at substantial eX- haustion of weft, a plurality of individually movable detectors, a support therefor hav-1 ing' aligning guideways, each detector having a substantially straight port-ion lying in the corresponding yguideways,l a controller secured to and iuvistanding from each detector, an actuator for the controllers, and relatively fiXed spaced Vmeans to support ,the controllers against lateral 1novement, por tions of the controllers substantially filling the space between said means so thatfsaid controllers support cach other, said supportv having portions to enjrage the detectors at points substai'itiallv under the controllers to support said detectors when the controllers are engaged by the actuator.

4t. In a weft detector for looms to coopertje,

ate with a bobbin having a plurality of holes y therein tohe uncovered at substantial eX- haustion of weft, a plurality of individually movable detectors, a support thereforhaving aligning guideways, each detector having` a substantially straight portion lyin'gin the secured to and'upstanding from` each l detector, an actuator for the controllers, and relacorresponding guideways, a controller tively fixed spaced means to support the controllers against lateral movement, portions of the controllers substantially filling the space between said means, each controller having a portion extending therefrom and in substantial engagement with corresponding portions of the adjacent controllers so that said controllers support each other, said portions preventing lateral displacement of the controllers when one of the detectors is received by a hole in the bobbin and thc other detectors are moved forwardly.

5. In a weft detector rfor looms to cooperate with a bobbin having a plurality of holes therein to be uncovered at substantial exhaustion of weft, a plurality of individually movable detectors to cooperate with the bobbin, a support for the detectors, a pair of spaced walls extending from the support, a controller secured to each detector, portions of said controllers ext-ending between the walls and substantially lilling the space between said walls so that the controllers are supported by each other, each detector having an upstanding portion, said upstanding portions being independent'of each other, and transfer mechanism to engage tbe'upstanding portions, said portions being held in proper position for engagement by the transfer mechanism by reason of the fact that the controllers and walls are in engagement with each other.

6. In a weft detector for looms to cooperate with a bobbin having a plurality of holes therein to be uncovered at substantial exhaustion of weft, a plurality of individually movable detectors to cooperate with the bobbin, a support for the detectors, a pair of spaced walls' extending from the support, a controller secured to each detector, portions of said controllers extending between the walls and substantially filling the space between said walls so that the controllers are supported by eachother, transferV mechanisni, and vertically extending spaced portions of the detectors lying in front of a portion of the'transfer mechanism to be engaged by the latter on a transferring pick of the loom, said portions in front of the transfer mechanism being held in proper vertical position by the mutual engagement of the walls and controllers.

In testimony whereof I have` hereunto affixed my signature.,

OSCAR AV. PAYNE. 

